678 OBSERVATIONS ON THE ZODIACAL LIGHT. 



No. 289. 



FEBRUARY 6lh, 1855: EVENING. 



Lat. 33 1' S. : Lon. 71 41' W. 



Sun set at 6A. 56'. 



Stronger Light at 8*. 30m. and 9A. 15m. : Diffuse at 8h. Zfim. 

 Zenith point at 8A. 30m., Lat. 56 29' S. : Lon. 82 30'. At 9h. 15m., Lat. 56 29' S. : Lon. 97 30'. 



Clouds (and the moon in the morning) since my last date (February 3d) until this evening, when the sky was clear, 

 and, except a slight haziness, was good for observations. The ecliptic' is, however, so near the horizon in the 

 evening, that the Zodiacal Light is by no means brilliant. Still I was able, by very careful observation, to get what 

 I consider reliable boundaries. The twilight is now very protracted, which adds to the dimness of the Light. At 

 9 h 15 1 " it was quite dim, yet distinctly to be made out. 



